CN102041407A - High-strength high-conductivity micro-boron copper alloy material and preparation method thereof - Google Patents
High-strength high-conductivity micro-boron copper alloy material and preparation method thereof Download PDFInfo
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Abstract
The invention relates to a high-strength high-conductivity micro-boron copper alloy material which comprises the following components in percentage by weight: 0.01-0.2% of B, 0.2-1.8% of rare metal (the rare metal is one or two of Zr and Te), balance of Cu and unavoidable impurities. The preparation method comprises the following steps: smelting, and ausforming to obtain the copper-based alloy having fine performance. The obtained alloy has superior comprehensive performance, wherein the tensile strength is 530-600 MPa, the conductivity is 78-95%IACS (International Annealing Copper Standard), and the extensibility is no less than 12%; and the alloy has the advantages of low cost, simple preparation process and the like, and is easy to recycle and process. The copper alloy material provided by the invention is mainly applicable to the fields of lead wires of a high-speed electrified railway contact network, lead frames of large-scale integrated circuits, electrode materials and the like, and has fine industrial application prospects.
Description
Technical field
The present invention relates to a kind of high-strength high-conductive copper alloy material and preparation method, be meant little boron Cu alloy material of a kind of high-strength and high-conductivity and preparation method especially; Belong to the nonferrous materials technical field.
Background technology
Copper and alloy thereof are because of having excellent conducting performance, heat conductivility, anti-fatigue performance, chemical stability and intensity and being easy to characteristics such as manufacturing, had application widely in industries such as electric power, machinery, electronics, traffic and the energy, become the important electron metallic substance.Along with fast development economic and science and technology, to used copper alloy with high strength and high conductivity demands for higher performance in field such as contact Wire for High-Speed Electric Railway, extensive integrated circuit lead frame and electrode materialss.Yet, owing to the physical property of copper alloy self causes being difficult to take into account simultaneously its intensity and electroconductibility, final acquisition intensity and all good copper alloys of electroconductibility of being difficult to.
At present, mainly solve the contradiction of copper alloy high strength and high conductivity by alloying and matrix material method.Though the matrix material method can obtain the superstrength copper alloy, its complicated process of preparation is difficult for large-scale production; Alloying preparation technology is simple than the former, is widely used at present, but still has some problems.Application number is that 02133772.1 Chinese patent application has been announced a kind of copper alloy material for contact net wire, and the composition of this kind alloy material is: it is that 0.1～1.2%Te, 0.2～1.3%Mg, 0.02～0.50%Li, surplus are Cu and unavoidable impurities that alloy contains weight percent.Its tensile strength sigma
bBe that 523～576MPa, specific conductivity are 76～72.6%IACS, its over-all properties is poor, can not satisfy modern energy-saving and cost-reducing theme well.Application number has been announced a kind of novel high-strength high-conductivity copper alloy and preparation method thereof for the 200710066484.X Chinese patent application, and the alloying constituent of the example 2 is: 1.0%Eu, 1.0%Gd, 1.0%Er, 0.5%C, all the other are copper, its tensile strength＞600MPa, electric conductivity＞80%IACS.Though its performance meets the demands substantially, wherein added a large amount of valuable rare earth elements, improve its production cost widely, and be difficult for recycling, run counter to the strategy of sustainable development.Therefore, when satisfying the copper alloy with high strength and high conductivity requirement, and make copper alloy have low, the easy recycling of production cost, easily processing and production technique is simple etc. that characteristics are one of main tasks of the present invention.
Summary of the invention
The objective of the invention is to overcome the deficiency of prior art and a kind of reasonable mixture ratio of components is provided, production technique is simple, production cost is low, the copper alloy of preparation has high strength and high conductivity, the little boron copper alloy of high-strength and high-conductivity and the preparation method of easily recycling.
The little boron copper alloy of a kind of high-strength and high-conductivity of the present invention, form by weight percentage by following component:
Boron 0.01～0.2%,
Rare metal 0.2～1.8%, surplus are Cu and unavoidable impurities, and the total content of impurity is no more than 0.01%.
In the little boron copper alloy of a kind of high-strength and high-conductivity of the present invention, described rare metal is selected from least a among Zr, the Te.
The preparation method of the little boron copper alloy of a kind of high-strength and high-conductivity of the present invention comprises the steps:
The first step: melting
Each set of dispense ratio of alloy by design takes by weighing boron, rare metal and copper respectively, carries out melting in vacuum or atmosphere, and smelting temperature is 1200 ± 50 ℃, and swage pours into ingot casting;
Second step: hot rolling after the solid solution
Alloy after the first step melting is heated to 900～1000 ℃, insulation 0.5～1.5h, shrend, carry out a solution treatment after, more described alloy being heated to 800～900 ℃, to implement dependent variables be 40～70% hot rolling;
The 3rd step: be rolled or drawing after the secondary solid solution
Second alloy of step after the hot rolling is heated to 900～1000 ℃, insulation 0.5～1.5h, shrend, carry out Secondary Solid Solution Treatment after, implementing dependent variable under room temperature is 70～95% rolling or drawings;
The 4th step: timeliness
In 300～500 ℃ of insulations after 0.2～10 hour, shrend promptly makes the little boron copper alloy of high-strength and high-conductivity with the alloy after the 3rd rolling and drawing of step.
The present invention adopts above-mentioned component proportioning, adds boron and Zr, the Te of trace in the copper matrix; Because B has very strong deoxygenation ability, can in copper and alloy thereof, form compound between nano level metal, can be distributed in to disperse crystal boundary, thereby suppressed the alloy cracking that oxygen causes to internal penetration by the crystal boundary diffusion from alloy surface, thereby improved alloy strength and softening temperature to a certain extent.And the Zr element can effectively improve the recrystallization temperature of copper alloy, improves the thermostability of copper alloy.The Te element mainly has been the precipitation strength effect in copper alloy, because the intrinsic property of precipitation second phase and the singularity that distributes in copper alloy, Te does not only reduce the electroconductibility of fine copper, but also has certain arc resistance.
Little boron copper alloy of the present invention has the following advantages compared with prior art:
1. the little boron copper alloy of high-strength and high-conductivity of the present invention has excellent comprehensive performances: tensile strength reaches 540～600MPa, specific conductivity 75～92%IACS, hardness 〉=160HV, unit elongation 〉=11%, according to the requirement of the ability of use, can adjust tensile strength and specific conductivity by the appropriate change component content;
2. the amount of the alloying element that the little boron copper alloy of high-strength and high-conductivity of the present invention adds is few, recycling easily, and the cost of material is low;
3. production technique of the present invention, equipment requirements are simple, and production cost is low, are fit to large-scale production, have favorable industrial application prospect.
In sum, the present invention has that production technique is simple, production cost is low and easy recycling, is applicable to industrial batch production, has certain market competition advantage, and a kind of high-performance copper alloy material of excellent combination property is provided for industry member; Be applicable to fields such as contact Wire for High-Speed Electric Railway, extensive integrated circuit lead frame and electrode materials.
Embodiment
Below in conjunction with specific embodiment the present invention is described in further details.
The invention provides 8 embodiment, alloy component is respectively:
1、Cu0.07B0.5Zr，
2、Cu0.14B0.9Zr，
3、Cu0.02B0.2Zr，
4、Cu0.12B0.5Te，
5、Cu0.06B0.5Te，
6、Cu0.04B0.5Zr0.6Te
7、Cu0.2B0.5Zr0.6Te
8、Cu0.01B0.9Zr0.9Te
Adopt following processing method preparation, handle;
The first step: melting
Each set of dispense ratio of alloy by design takes by weighing boron, rare metal and copper respectively, carries out melting in vacuum or atmosphere, and smelting temperature is at 1200 ± 50 ℃, and swage pours into ingot casting;
Second step: hot rolling after the solid solution
Alloy after the first step melting is heated to 900～1000 ℃, insulation 0.5～1.5h, shrend, carry out a solution treatment after, more described alloy being heated to 800～900 ℃, to implement dependent variables be 40～70% hot rolling;
The 3rd step: be rolled and drawing after the secondary solid solution
Second alloy of step after the hot rolling is heated to 900～1000 ℃, insulation 0.5～1.5h, shrend, carry out Secondary Solid Solution Treatment after, implementing dependent variable under room temperature is 70～95% rolling or drawings;
The 4th step: timeliness
In 300～500 ℃ of insulations after 0.2～10 hour, shrend promptly makes the little boron copper alloy of high-strength and high-conductivity with the alloy after the 3rd rolling and drawing of step, and numbering is followed successively by: 1,2,3,4,5,6,7,8; Its technical performance index is referring to table 1.
Table 1
From the data of table 1 as can be seen, adopt little boron copper alloy of component of the present invention, its tensile strength reaches 540～600MPa, specific conductivity 75～92%IACS, hardness 〉=160HV, unit elongation 〉=11%; Still can keep good horizontal in acquisition its electric conductivity of high-intensity while, can be good at satisfying nowadays to the copper alloy with high strength and high conductivity material performance requirement, be applicable to fields such as contact Wire for High-Speed Electric Railway, extensive integrated circuit lead frame, electrode materials, have favorable industrial application prospect.
Claims (3)
1. little boron copper alloy of high-strength and high-conductivity, form by weight percentage by following component:
Boron 0.01～0.2%,
Rare metal 0.2～1.8%, surplus are Cu and unavoidable impurities, and the total content of impurity is no more than 0.01%.
2. the little boron copper alloy of a kind of high-strength and high-conductivity according to claim 1 is characterized in that: described rare metal is selected from least a among Zr, the Te.
3. prepare the method for the little boron copper alloy of a kind of high-strength and high-conductivity as claimed in claim 1, comprise the steps:
The first step: melting
Each set of dispense ratio of alloy by design takes by weighing boron, rare metal and copper respectively, carries out melting in vacuum or atmosphere, and smelting temperature is 1200 ± 50 ℃, and swage pours into ingot casting;
Second step: hot rolling after the solid solution
Alloy after the first step melting is heated to 900～1000 ℃, insulation 0.5～1.5h, shrend, carry out a solution treatment after, more described alloy being heated to 800～900 ℃, to implement dependent variables be 40～70% hot rolling;
The 3rd step: be rolled or drawing after the secondary solid solution
Second alloy of step after the hot rolling is heated to 900～1000 ℃, insulation 0.5～1.5h, shrend, carry out Secondary Solid Solution Treatment after, implementing dependent variable under room temperature is 70～95% rolling or drawings;
The 4th step: timeliness
In 300～500 ℃ of insulations after 0.2～10 hour, shrend promptly makes the little boron copper alloy of high-strength and high-conductivity with the alloy after the 3rd rolling or drawing of step.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201110023960A CN102041407B (en) | 2011-01-21 | 2011-01-21 | High-strength high-conductivity micro-boron copper alloy material and preparation method thereof |
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| CN201110023960A CN102041407B (en) | 2011-01-21 | 2011-01-21 | High-strength high-conductivity micro-boron copper alloy material and preparation method thereof |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102676870A (en) * | 2012-06-07 | 2012-09-19 | 铁岭富兴铜业有限公司 | Lead-free copper alloy wire material and preparation method thereof |
| US20140205492A1 (en) * | 2011-09-29 | 2014-07-24 | Tohoku University | Copper alloy wire rod and method for manufacturing the same |
| CN105047245A (en) * | 2015-07-13 | 2015-11-11 | 江苏亨通线缆科技有限公司 | Copper magnesium alloy wire applied to cable introduction by user |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1285417A (en) * | 1999-08-20 | 2001-02-28 | 陈丕文 | High-conductivity copper base alloy for electrode of resistance welding |
| CN1410569A (en) * | 2002-09-18 | 2003-04-16 | 四川鑫炬矿业资源开发股份有限公司 | Copper alloy material for contact net wire |
| CN1676642A (en) * | 2004-03-29 | 2005-10-05 | 日本碍子株式会社 | Copper alloy having both strength and conductivity and copper alloy manufacturing method |
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2011
- 2011-01-21 CN CN201110023960A patent/CN102041407B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1285417A (en) * | 1999-08-20 | 2001-02-28 | 陈丕文 | High-conductivity copper base alloy for electrode of resistance welding |
| CN1410569A (en) * | 2002-09-18 | 2003-04-16 | 四川鑫炬矿业资源开发股份有限公司 | Copper alloy material for contact net wire |
| CN1676642A (en) * | 2004-03-29 | 2005-10-05 | 日本碍子株式会社 | Copper alloy having both strength and conductivity and copper alloy manufacturing method |
Non-Patent Citations (1)
| Title |
|---|
| 《材料研究学报》 19970825 王吉会等 硼对铜合金组织和性能的影响 381-386 1-2 第11卷, 第04期 2 * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20140205492A1 (en) * | 2011-09-29 | 2014-07-24 | Tohoku University | Copper alloy wire rod and method for manufacturing the same |
| US9754703B2 (en) * | 2011-09-29 | 2017-09-05 | Ngk Insulators, Ltd. | Copper alloy wire rod and method for manufacturing the same |
| CN102676870A (en) * | 2012-06-07 | 2012-09-19 | 铁岭富兴铜业有限公司 | Lead-free copper alloy wire material and preparation method thereof |
| CN102676870B (en) * | 2012-06-07 | 2014-05-07 | 铁岭富兴铜业有限公司 | Lead-free copper alloy wire material and preparation method thereof |
| CN105047245A (en) * | 2015-07-13 | 2015-11-11 | 江苏亨通线缆科技有限公司 | Copper magnesium alloy wire applied to cable introduction by user |
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